package com.kuang.config;

import jdk.nashorn.internal.ir.CallNode;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        //登录成功之后，应该有用户的session，如果存在
        Object loginUser = request.getSession().getAttribute("loginUser");
        if (loginUser == null) {
            request.setAttribute("msg", "没有权限，请先登录");
            request.getRequestDispatcher("/index.html").forward(request, response);
        } else {
            return true;
        }

        return false;
    }
}
